Fuse puller



G. F; norm. FUSE FULLER. APPLICATION FILED'MAYZI Patented Jan. 24, 1922,

m l 6 ET I/v VENT-OR 5 E s s e n n W ATTORNEY UNITED STATES PATENTOFFICE.

GEORGE E. Romczor .nrLwa-uxnn, WISCONSIN, AssfGNon 'ro GEORGE E. normmmmc CQIIANN,$01,MILWAUKEETWISCONSIN, A conrona'rrolv or WISCONSIN,

To allwhomit mg concern: 1

v:Be it known/that -:I, GEORGE F. :ROHN, a citizen of the United States,and'resident of l\Iilwaukee,.county of Milwaukee, and State of\Visconsin, have invented newand useful improvements' in -rFusePullers,'-ofwhich the following is a description, reference being had tothe accompanying drawings, which area part ofithisPspecification. V

The-invention relatesito a device for pulling or removing cartridgeafuses fromthe terminals with which they are connected.

The object of the invention isto provide a fuse puller which preventsior obviates any danger'ofthe operatorarecei-ving a shock in removing orreplacing the fuse-,the device being readily removable from the fuse sothat it may be used when desired on different fuses. V

The invention further consists in the several features hereinafter setforth and more particularly defined by claims at the conclusion hereof.

In the drawings: Fig.1 is a side View of the device embodying theinvention,- parts being shown in section; Fig. 2 is a section taken onthe line 2-2 of Fig. 1 with the clip shown in full and the body brokenaway; Fig. 3 is a section taken on the line 3--3 of Fig. 1; Fig. 4 is aview similar to Fig. 3 showing the device removed from the fuse.

In the drawings, the numeral 4 designates a cartridge or refillable fuseof usual construction having blade contacts 5 at its ends insertablebetween the parts of the usual fixed terminals 6. As usually made thesefuses have a cylindrical shell 7 of the fibre or other suitableinsulating material and metal ferrules or caps 8, the fuse link beingdisposed within the shell and connected to the blades. The caps 8 are ofmetal and connect with the blades.

In removing or replacing a fuse, if through ignorance or carelessnessthe operator grasps the fuse so as to short circuit the current throughhim he will receive a shock or burn which, of course, is more dangerousthe greater the voltage. To prevent such an occurrence I have provided ahandle 10 of insulating material which is adapted to be clamped to thefuse so that it may be readily removed therefrom. This handle extendsthe full length of the fuse barrel and also preferably projects out overthe FUSE PULLER.

Specification of L' etters Patent.

Application flled m 27,

Patented Jamaal, 1922.

1920. Serial No. 384,769.

vblades so-that the operator shand cannot come in contact with any ofthe metal parts of the fuse.

The handle member 10 is provided with recesses 11 receiving the upperends of .cla'mpingmembers 12 having clamping jaws 13. The members .12are formed from relaii'e'ly stiff metal strips and have curved ends-14and. tapertoa flat base 15 provided with'an opening to receivea'clamping bolt 16 which passes upwardly through an aperture 1.7 in thehandle and carries a clamping nut 18 whichxmay be entirely of insulatingmaterial but is preferablyprovided with a threaded metal sleeve 19 andthe insulated exterior has afluted beveled side 18"to per- ":mit readyturning of the nut. While these members 12 might be used alone to clampthe handle to the fuse, it is preferred to use metal clips 20 of moreresilient metal in conjunction therewith. Each clip 20 is 7 formed fromthin metal strips and has its spreading of the clips when they areforced over the fuse.

The handle is reinforced at the points of greatest strain imposed by theclamping means by means of metal plates 26 having openings 27 thereinwithin which the clamping members are free to move.

The handle member is provided with a recessed portion 28 to permit readycirculation of air around the fuse barrel and with a sight opening 29 topermit ready inspection of the capacity indicator 80.

In Fig. 4: I have shown the position the clamp is in at the time thehandle is to be placed onto the fuse, the nut 18 being loosened so thatthe jaws 13 will pass freely over the fuse and also permit the clip 20to be sprung over the fuse. With the parts in this position the handleis moved down onto the fuse and the nut 18 is then turned on the bolt 16which thereby draws the member 12 and the clip 20 up into the recess 11in the. handle and in doing so causes the ends of the jaws 13 to pressinwardly against the firm clampingengagement with the use so that thefuse may be readily withdrawn from the fixed terminals by grasping thehandle and moving it in the proper,direcinsulating material, a clipmember having tion.

I have shown two sets of clamping means associated withthefhandlebut'for smaller fuses a single set engagingthe central portionof the fuse may be employed, particu-' la'rly 'such' limitations arespecified in the claims.

\Vhat I claim as my inventionis:

1:. A fuse puller, comprising ahandle of insulating material, means forattaching the handle to'the fuse including a clip having resilient jawsengaging the cylindrical p'ortion of the fuse, and means distinct fromsaid jaws for pressing and maintaining them in clamping-engagement withthe fuse.

' 2: A'fuse puller, comprising a handleof. 'insulatingmaterial, a clipmembercarried by said handle and having'resilient jaws 1 adapted to bepressed the use to part lyv surrqunql tha me, c umeans d s ct 1d jawsfor securing them inengage- 3 A fuse puller, conrpris iiig' a handle ofresilient j aws engageable with the fuseyand a clamp for saidjawscarried bythe'handle.

4.;The; combination, of a handle of in-.

sulating material for a refillable fuse, aclip; member engageable withthe fuse, aclip clamp carried by the handle, the ends of said clip'member and clip clamp being mounted ;within' the hand le', a clampingbolt connected to both memberS and a clamping nut i for] moving the boltto actuate the-gc'lip V clamppl 5; The combination lot. a handle insulating material: for: a refillable fuse, having recesses therein, clipmembers engageable -withthe fuse and having portions disposed in saidrecesses, clip clampshaving aportion disposed inf said recesses, ametal/reinfqrcementfor v the edges of I each recess, and means foractuatingtheclip clamps: 1

r 1 In testimony whereof-I afiix my signature.

l A d GEQRGE iFL-ROHNV V

